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Posted to dev@datasketches.apache.org by "sleeepyjack (via GitHub)" <gi...@apache.org> on 2026/05/21 01:02:54 UTC

[PR] Initial HLL_8 draft [datasketches-cuda]

sleeepyjack opened a new pull request, #2:
URL: https://github.com/apache/datasketches-cuda/pull/2

   (no comment)


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Re: [PR] Initial HLL_8 draft [datasketches-cuda]

Posted by "sleeepyjack (via GitHub)" <gi...@apache.org>.
sleeepyjack commented on PR #2:
URL: https://github.com/apache/datasketches-cuda/pull/2#issuecomment-4508448285

   It seems I don't have the required permissions. At least I don't see a "merge" button, nor can I add reviewers, etc.


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Re: [PR] Initial HLL_8 draft [datasketches-cuda]

Posted by "sleeepyjack (via GitHub)" <gi...@apache.org>.
sleeepyjack commented on PR #2:
URL: https://github.com/apache/datasketches-cuda/pull/2#issuecomment-4508460509

   @leerho lets wait with merging this PR until after our meeting today. There are a few open questions I would like to discuss.


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Re: [PR] Initial HLL_8 draft [datasketches-cuda]

Posted by "leerho (via GitHub)" <gi...@apache.org>.
leerho commented on PR #2:
URL: https://github.com/apache/datasketches-cuda/pull/2#issuecomment-4505126020

   Daniel, are you able to merge this, or do you need me to do it for you?


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Re: [PR] Initial HLL_8 draft [datasketches-cuda]

Posted by "tisonkun (via GitHub)" <gi...@apache.org>.
tisonkun commented on PR #2:
URL: https://github.com/apache/datasketches-cuda/pull/2#issuecomment-4503901250

   Out of the thread - now that there is [cuda-oxide](https://github.com/NVlabs/cuda-oxide), is it doable to integrate with [datasketches-rust](https://github.com/apache/datasketches-rust) as well?


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Re: [PR] Initial HLL_8 draft [datasketches-cuda]

Posted by "sleeepyjack (via GitHub)" <gi...@apache.org>.
sleeepyjack commented on PR #2:
URL: https://github.com/apache/datasketches-cuda/pull/2#issuecomment-4504001845

   @tisonkun @leerho 
   That's an interesting question!
   
   `cuda_oxide` has been made public as an alpha release a week ago and I've been aware and involved in the project since a months or so. The nice thing about `cuda-oxide` is that it emits CUDA PTX directly from native Rust code - no FFI converting C/C++ as an intermediate whatsoever.
   
   The current `datasketches-cuda` project builds on top of our CUDA/C++ ecosystem (aka we're using `cuda::experimental::cuco::hyperloglog` which is implemented in C++).
   We are actively exploring how to make our existing CUDA/C++ ecosystem available to Rust without having to rewrite everything or having to go through FFI, but it's in very early stages.
   
   Since after all HLL is an "easy" algorithm, it should be straightforward to implement it natively in Rust and use `cuda-oxide` for GPU acceleration. For more complex sketch algorithms, we might want to centralize the GPU implementation for better maintainability.


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Re: [PR] Add initial repository structure + CUDA-accelerated HLL_8 [datasketches-cuda]

Posted by "sleeepyjack (via GitHub)" <gi...@apache.org>.
sleeepyjack commented on PR #2:
URL: https://github.com/apache/datasketches-cuda/pull/2#issuecomment-4523276768

   Marking this PR as draft for now as it needs some polishing which I will push soon.


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Re: [PR] Add initial repository structure + CUDA-accelerated HLL_8 [datasketches-cuda]

Posted by "leerho (via GitHub)" <gi...@apache.org>.
leerho merged PR #2:
URL: https://github.com/apache/datasketches-cuda/pull/2


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